00341nam a2200133Ia 4500082001700000245004100017260002600058300000900084650002500093650002200118650001400140650003300154650002000187  a020.621 NAT- 0aNational centres for library service  aThe HaguebIFLAc1975  a34p.  aInformation services  aSpace utilization  aLibraries  aReference services (Library)  aLibrary science